/public/.well-known/exchange/*). These RSA keys are used to send a symmetric key to a recipient; the "share key". This symmetric key is then used to decrypt pointers, UCANs, and other messages.
sharedis the label for the top-level partition for both incoming a outgoing shared pointers. It is structured as a map of salted and hashed with their zero-indexed root DIDs pointing to one-or-more payloads. Each of these payloads are of fixed length, since they're encrypted with the target's public key.